mirror of
https://github.com/apache/nuttx.git
synced 2026-06-06 08:36:24 +08:00
Create a src directory for the STM32F7 (not much in it yet)
This commit is contained in:
Gregory Nutt
@@ -168,8 +168,11 @@
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#define STM32_IRQ_I2C4ER (STM32_IRQ_INTERRUPTS+96) /* 96: I2C4 Error interrupt */
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#define STM32_IRQ_SPDIFRX (STM32_IRQ_INTERRUPTS+97) /* 97: SPDIFRX global interrupt */
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#define NR_VECTORS (STM32_IRQ_INTERRUPTS+98)
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#define NR_IRQS (STM32_IRQ_INTERRUPTS+98)
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#define STM32_IRQ_NEXTINT 98
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#define STM32_NR_IRQS (STM32_IRQ_INTERRUPTS+STM32_IRQ_NEXTINT)
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#define NR_VECTORS (STM32_IRQ_INTERRUPTS+STM32_IRQ_NEXTINT)
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#define NR_IRQS (STM32_IRQ_INTERRUPTS+STM32_IRQ_NEXTINT)
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/****************************************************************************************************
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* Public Types
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@@ -341,9 +341,9 @@ void __start(void)
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/* Copy any necessary code sections from FLASH to RAM. The correct
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* destination in SRAM is geive by _sramfuncs and _eramfuncs. The
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* temporary location is in flash after the data initalization code
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* at _framfuncs. This must be done before sam_clockconfig() can be
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* called (at least for the SAM4L family).
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* temporary location is in flash after the data initialization code
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* at _framfuncs. This should be done before sam_clockconfig() is
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* called (in case it has some dependency on initialized C variables).
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*/
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#ifdef CONFIG_ARCH_RAMFUNCS
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@@ -0,0 +1,4 @@
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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@@ -0,0 +1,110 @@
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############################################################################
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# arch/arm/src/stm32f7/Make.defs
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#
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# Copyright (C) 2015 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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||||
#
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||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# 2. Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# 3. Neither the name NuttX nor the names of its contributors may be
|
||||
# used to endorse or promote products derived from this software
|
||||
# without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
# POSSIBILITY OF SUCH DAMAGE.
|
||||
#
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||||
############################################################################
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||||
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||||
# The start-up, "head", file. Only common vectors are support so there
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# isn't one.
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HEAD_ASRC =
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# Common ARM and Cortex-M7 files
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CMN_UASRCS =
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CMN_UCSRCS =
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CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
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CMN_ASRCS += vfork.S
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CMN_CSRCS = up_assert.c up_blocktask.c up_copyfullstate.c up_createstack.c
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CMN_CSRCS += up_mdelay.c up_udelay.c up_exit.c up_idle.c up_initialize.c
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CMN_CSRCS += up_initialstate.c up_interruptcontext.c up_memfault.c up_modifyreg8.c
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CMN_CSRCS += up_modifyreg16.c up_modifyreg32.c up_releasepending.c
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CMN_CSRCS += up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c
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CMN_CSRCS += up_sigdeliver.c up_stackframe.c up_unblocktask.c up_usestack.c
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CMN_CSRCS += up_doirq.c up_hardfault.c up_svcall.c up_vfork.c
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# Configuration-dependent common files
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ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
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ifeq ($(CONFIG_ARMV7M_LAZYFPU),y)
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CMN_ASRCS += up_lazyexception.S
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else
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CMN_ASRCS += up_exception.S
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endif
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CMN_CSRCS += up_vectors.c
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endif
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ifeq ($(CONFIG_ARMV7M_DCACHE),y)
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CMN_CSRCS += arch_enable_dcache.c arch_disable_dcache.c
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CMN_CSRCS += arch_invalidate_dcache.c arch_invalidate_dcache_all.c
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ifneq ($(CONFIG_ARMV7M_DCACHE_WRITETHROUGH),y)
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CMN_CSRCS += arch_clean_dcache.c arch_clean_dcache_all.c
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CMN_CSRCS += arch_flush_dcache.c arch_flush_dcache_all.c
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endif
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endif
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ifeq ($(CONFIG_ARCH_FPU),y)
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CMN_ASRCS += up_fpu.S
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ifneq ($(CONFIG_ARMV7M_CMNVECTOR),y)
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CMN_CSRCS += up_copyarmstate.c
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endif
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endif
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ifeq ($(CONFIG_ARCH_RAMVECTORS),y)
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CMN_CSRCS += up_ramvec_initialize.c up_ramvec_attach.c
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endif
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ifeq ($(CONFIG_ARCH_MEMCPY),y)
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CMN_ASRCS += up_memcpy.S
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endif
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ifeq ($(CONFIG_BUILD_PROTECTED),y)
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CMN_CSRCS += up_mpu.c up_task_start.c up_pthread_start.c
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ifneq ($(CONFIG_DISABLE_SIGNALS),y)
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CMN_CSRCS += up_signal_dispatch.c
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CMN_UASRCS += up_signal_handler.S
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endif
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endif
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ifeq ($(CONFIG_ELF),y)
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CMN_CSRCS += up_elf.c
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endif
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ifeq ($(CONFIG_STACK_COLORATION),y)
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CMN_CSRCS += up_checkstack.c
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endif
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# Required STM32F7 files
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CHIP_ASRCS =
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CHIP_CSRCS =
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@@ -0,0 +1,82 @@
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/************************************************************************************
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||||
* arch/arm/src/stm32f7/chip.h
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||||
*
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||||
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
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||||
************************************************************************************/
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||||
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#ifndef __ARCH_ARM_SRC_STM32F7_CHIP_H
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#define __ARCH_ARM_SRC_STM32F7_CHIP_H
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/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
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||||
|
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#include <nuttx/config.h>
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/* Include the memory map and the chip definitions file. Other chip hardware files
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* should then include this file for the proper setup.
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*/
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#include <arch/irq.h>
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#include <arch/stm32f7/chip.h>
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#include "chip/stm32_memorymap.h"
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/* If the common ARMv7-M vector handling logic is used, then it expects the
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* following definition in this file that provides the number of supported external
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* interrupts which, for this architecture, is provided in the arch/stm32f7/chip.h
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* header file.
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*/
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#define ARMV7M_PERIPHERAL_INTERRUPTS STM32F7_IRQ_NEXTINT
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/* Cache line sizes (in bytes)for the STM32F7 */
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#define ARMV7M_DCACHE_LINESIZE 32 /* 32 bytes (8 words) */
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#define ARMV7M_ICACHE_LINESIZE 32 /* 32 bytes (8 words) */
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|
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/************************************************************************************
|
||||
* Pre-processor Definitions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Types
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Data
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
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#endif /* __ARCH_ARM_SRC_STM32F7_CHIP_H */
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,120 @@
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/****************************************************************************
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* Name: stm32_mpuinitialize
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* arch/arm/src/stm32f7/stm32_mpuinit.h
|
||||
*
|
||||
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ARCH_ARM_SRC_STM32F7_STM32_MPUINIT_H
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||||
#define __ARCH_ARM_SRC_STM32F7_STM32_MPUINIT_H
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_mpuinitialize
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_mpuinitialize
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_mpuinitialize
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_mpuinitialize
|
||||
* Inline Functions
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_mpuinitialize
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_mpuinitialize
|
||||
*
|
||||
* Description:
|
||||
* Configure the MPU to permit user-space access to only unrestricted
|
||||
* STM32F7 resources.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_BUILD_PROTECTED
|
||||
void stm32_mpuinitialize(void);
|
||||
#else
|
||||
# define stm32_mpuinitialize()
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_mpu_uheap
|
||||
*
|
||||
* Description:
|
||||
* Map the user heap region.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_BUILD_PROTECTED
|
||||
void stm32_mpu_uheap(uintptr_t start, size_t size);
|
||||
#else
|
||||
# define stm32_mpu_uheap(start,size)
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* __ARCH_ARM_SRC_STM32F7_STM32_MPUINIT_H */
|
||||
@@ -0,0 +1,407 @@
|
||||
/****************************************************************************
|
||||
* arch/arm/src/stm32f7/stm32_start.c
|
||||
*
|
||||
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <stdint.h>
|
||||
#include <assert.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/init.h>
|
||||
#include <arch/board/board.h>
|
||||
|
||||
#include "up_arch.h"
|
||||
#include "up_internal.h"
|
||||
|
||||
#include "cache.h"
|
||||
#ifdef CONFIG_ARCH_FPU
|
||||
# include "nvic.h"
|
||||
#endif
|
||||
|
||||
#include "stm32_clockconfig.h"
|
||||
#include "stm32_userspace.h"
|
||||
#include "stm32_start.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
/* Memory Map ***************************************************************/
|
||||
/*
|
||||
* 0x0400:0000 - Beginning of the internal FLASH. Address of vectors.
|
||||
* Mapped as boot memory address 0x0000:0000 at reset.
|
||||
* 0x041f:ffff - End of flash region (assuming the max of 2MiB of FLASH).
|
||||
* 0x2000:0000 - Start of internal SRAM and start of .data (_sdata)
|
||||
* - End of .data (_edata) and start of .bss (_sbss)
|
||||
* - End of .bss (_ebss) and bottom of idle stack
|
||||
* - _ebss + CONFIG_IDLETHREAD_STACKSIZE = end of idle stack,
|
||||
* start of heap. NOTE that the ARM uses a decrement before
|
||||
* store stack so that the correct initial value is the end of
|
||||
* the stack + 4;
|
||||
* 0x2005:ffff - End of internal SRAM and end of heap (a
|
||||
*/
|
||||
|
||||
#define IDLE_STACK ((uintptr_t)&_ebss+CONFIG_IDLETHREAD_STACKSIZE-4)
|
||||
#define HEAP_BASE ((uintptr_t)&_ebss+CONFIG_IDLETHREAD_STACKSIZE)
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
/* g_idle_topstack: _sbss is the start of the BSS region as defined by the
|
||||
* linker script. _ebss lies at the end of the BSS region. The idle task
|
||||
* stack starts at the end of BSS and is of size CONFIG_IDLETHREAD_STACKSIZE.
|
||||
* The IDLE thread is the thread that the system boots on and, eventually,
|
||||
* becomes the IDLE, do nothing task that runs only when there is nothing
|
||||
* else to run. The heap continues from there until the end of memory.
|
||||
* g_idle_topstack is a read-only variable the provides this computed
|
||||
* address.
|
||||
*/
|
||||
|
||||
const uintptr_t g_idle_topstack = HEAP_BASE;
|
||||
|
||||
/****************************************************************************
|
||||
* Private Function prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_ARCH_FPU
|
||||
static inline void stm32_fpuconfig(void);
|
||||
#endif
|
||||
#ifdef CONFIG_STACK_COLORATION
|
||||
static void go_os_start(void *pv, unsigned int nbytes)
|
||||
__attribute__ ((naked,no_instrument_function,noreturn));
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_ARMV7M_STACKCHECK
|
||||
/* we need to get r10 set before we can allow instrumentation calls */
|
||||
|
||||
void __start(void) __attribute__ ((no_instrument_function));
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_fpuconfig
|
||||
*
|
||||
* Description:
|
||||
* Configure the FPU. Relative bit settings:
|
||||
*
|
||||
* CPACR: Enables access to CP10 and CP11
|
||||
* CONTROL.FPCA: Determines whether the FP extension is active in the
|
||||
* current context:
|
||||
* FPCCR.ASPEN: Enables automatic FP state preservation, then the
|
||||
* processor sets this bit to 1 on successful completion of any FP
|
||||
* instruction.
|
||||
* FPCCR.LSPEN: Enables lazy context save of FP state. When this is
|
||||
* done, the processor reserves space on the stack for the FP state,
|
||||
* but does not save that state information to the stack.
|
||||
*
|
||||
* Software must not change the value of the ASPEN bit or LSPEN bit while either:
|
||||
* - the CPACR permits access to CP10 and CP11, that give access to the FP
|
||||
* extension, or
|
||||
* - the CONTROL.FPCA bit is set to 1
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_ARCH_FPU
|
||||
#if defined(CONFIG_ARMV7M_CMNVECTOR) && !defined(CONFIG_ARMV7M_LAZYFPU)
|
||||
|
||||
static inline void stm32_fpuconfig(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
|
||||
/* Set CONTROL.FPCA so that we always get the extended context frame
|
||||
* with the volatile FP registers stacked above the basic context.
|
||||
*/
|
||||
|
||||
regval = getcontrol();
|
||||
regval |= (1 << 2);
|
||||
setcontrol(regval);
|
||||
|
||||
/* Ensure that FPCCR.LSPEN is disabled, so that we don't have to contend
|
||||
* with the lazy FP context save behaviour. Clear FPCCR.ASPEN since we
|
||||
* are going to turn on CONTROL.FPCA for all contexts.
|
||||
*/
|
||||
|
||||
regval = getreg32(NVIC_FPCCR);
|
||||
regval &= ~((1 << 31) | (1 << 30));
|
||||
putreg32(regval, NVIC_FPCCR);
|
||||
|
||||
/* Enable full access to CP10 and CP11 */
|
||||
|
||||
regval = getreg32(NVIC_CPACR);
|
||||
regval |= ((3 << (2*10)) | (3 << (2*11)));
|
||||
putreg32(regval, NVIC_CPACR);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static inline void stm32_fpuconfig(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
|
||||
/* Clear CONTROL.FPCA so that we do not get the extended context frame
|
||||
* with the volatile FP registers stacked in the saved context.
|
||||
*/
|
||||
|
||||
regval = getcontrol();
|
||||
regval &= ~(1 << 2);
|
||||
setcontrol(regval);
|
||||
|
||||
/* Ensure that FPCCR.LSPEN is disabled, so that we don't have to contend
|
||||
* with the lazy FP context save behaviour. Clear FPCCR.ASPEN since we
|
||||
* are going to keep CONTROL.FPCA off for all contexts.
|
||||
*/
|
||||
|
||||
regval = getreg32(NVIC_FPCCR);
|
||||
regval &= ~((1 << 31) | (1 << 30));
|
||||
putreg32(regval, NVIC_FPCCR);
|
||||
|
||||
/* Enable full access to CP10 and CP11 */
|
||||
|
||||
regval = getreg32(NVIC_CPACR);
|
||||
regval |= ((3 << (2*10)) | (3 << (2*11)));
|
||||
putreg32(regval, NVIC_CPACR);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#else
|
||||
# define stm32_fpuconfig()
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_tcmenable
|
||||
*
|
||||
* Description:
|
||||
* Enable/disable tightly coupled memories. Size of tightly coupled
|
||||
* memory regions is controlled by GPNVM Bits 7-8.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static inline void stm32_tcmenable(void)
|
||||
{
|
||||
uint32_t regval;
|
||||
|
||||
ARM_DSB();
|
||||
ARM_ISB();
|
||||
|
||||
/* Assure that GPNVM 7-8 settings are as expected */
|
||||
#warning Missing logic
|
||||
|
||||
/* Enabled/disabled ITCM */
|
||||
|
||||
#ifdef CONFIG_ARMV7M_ITCM
|
||||
regval = NVIC_TCMCR_EN | NVIC_TCMCR_RMW | NVIC_TCMCR_RETEN;
|
||||
#else
|
||||
regval = getreg32(NVIC_ITCMCR);
|
||||
regval &= ~NVIC_TCMCR_EN;
|
||||
#endif
|
||||
putreg32(regval, NVIC_ITCMCR);
|
||||
|
||||
/* Enabled/disabled DTCM */
|
||||
|
||||
#ifdef CONFIG_ARMV7M_DTCM
|
||||
regval = NVIC_TCMCR_EN | NVIC_TCMCR_RMW | NVIC_TCMCR_RETEN;
|
||||
#else
|
||||
regval = getreg32(NVIC_DTCMCR);
|
||||
regval &= ~NVIC_TCMCR_EN;
|
||||
#endif
|
||||
putreg32(regval, NVIC_DTCMCR);
|
||||
|
||||
ARM_DSB();
|
||||
ARM_ISB();
|
||||
|
||||
#ifdef CONFIG_ARMV7M_ITCM
|
||||
/* Copy TCM code from flash to ITCM */
|
||||
|
||||
#warning Missing logic
|
||||
#endif
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: go_os_start
|
||||
*
|
||||
* Description:
|
||||
* Set the IDLE stack to the
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_STACK_COLORATION
|
||||
static void go_os_start(void *pv, unsigned int nbytes)
|
||||
{
|
||||
/* Set the IDLE stack to the stack coloration value then jump to
|
||||
* os_start(). We take extreme care here because were currently
|
||||
* executing on this stack.
|
||||
*
|
||||
* We want to avoid sneak stack access generated by the compiler.
|
||||
*/
|
||||
|
||||
__asm__ __volatile__
|
||||
(
|
||||
"\tmovs r1, r1, lsr #2\n" /* R1 = nwords = nbytes >> 2 */
|
||||
"\tbeq 2f\n" /* (should not happen) */
|
||||
|
||||
"\tbic r0, r0, #3\n" /* R0 = Aligned stackptr */
|
||||
"\tmovw r2, #0xbeef\n" /* R2 = STACK_COLOR = 0xdeadbeef */
|
||||
"\tmovt r2, #0xdead\n"
|
||||
|
||||
"1:\n" /* Top of the loop */
|
||||
"\tsub r1, r1, #1\n" /* R1 nwords-- */
|
||||
"\tcmp r1, #0\n" /* Check (nwords == 0) */
|
||||
"\tstr r2, [r0], #4\n" /* Save stack color word, increment stackptr */
|
||||
"\tbne 1b\n" /* Bottom of the loop */
|
||||
|
||||
"2:\n"
|
||||
"\tmov r14, #0\n" /* LR = return address (none) */
|
||||
"\tb os_start\n" /* Branch to os_start */
|
||||
);
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: _start
|
||||
*
|
||||
* Description:
|
||||
* This is the reset entry point.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void __start(void)
|
||||
{
|
||||
const uint32_t *src;
|
||||
uint32_t *dest;
|
||||
|
||||
#ifdef CONFIG_ARMV7M_STACKCHECK
|
||||
/* Set the stack limit before we attempt to call any functions */
|
||||
|
||||
__asm__ volatile ("sub r10, sp, %0" : : "r" (CONFIG_IDLETHREAD_STACKSIZE - 64) : );
|
||||
#endif
|
||||
|
||||
/* Clear .bss. We'll do this inline (vs. calling memset) just to be
|
||||
* certain that there are no issues with the state of global variables.
|
||||
*/
|
||||
|
||||
for (dest = &_sbss; dest < &_ebss; )
|
||||
{
|
||||
*dest++ = 0;
|
||||
}
|
||||
|
||||
/* Move the initialized data section from his temporary holding spot in
|
||||
* FLASH into the correct place in SRAM. The correct place in SRAM is
|
||||
* give by _sdata and _edata. The temporary location is in FLASH at the
|
||||
* end of all of the other read-only data (.text, .rodata) at _eronly.
|
||||
*/
|
||||
|
||||
for (src = &_eronly, dest = &_sdata; dest < &_edata; )
|
||||
{
|
||||
*dest++ = *src++;
|
||||
}
|
||||
|
||||
/* Copy any necessary code sections from FLASH to RAM. The correct
|
||||
* destination in SRAM is geive by _sramfuncs and _eramfuncs. The
|
||||
* temporary location is in flash after the data initialization code
|
||||
* at _framfuncs. This should be done before stm32_clockconfig() is
|
||||
* called (in case it has some dependency on initialized C variables).
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_ARCH_RAMFUNCS
|
||||
for (src = &_framfuncs, dest = &_sramfuncs; dest < &_eramfuncs; )
|
||||
{
|
||||
*dest++ = *src++;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Configure the UART so that we can get debug output as soon as possible */
|
||||
|
||||
stm32_clockconfig();
|
||||
stm32_fpuconfig();
|
||||
stm32_lowsetup();
|
||||
|
||||
/* Enable/disable tightly coupled memories */
|
||||
|
||||
stm32_tcmenable();
|
||||
|
||||
/* Initialize onboard resources */
|
||||
|
||||
stm32_boardinitialize();
|
||||
|
||||
/* Enable I- and D-Caches */
|
||||
|
||||
arch_dcache_writethrough();
|
||||
arch_enable_icache();
|
||||
arch_enable_dcache();
|
||||
|
||||
/* Perform early serial initialization */
|
||||
|
||||
#ifdef USE_EARLYSERIALINIT
|
||||
up_earlyserialinit();
|
||||
#endif
|
||||
|
||||
/* For the case of the separate user-/kernel-space build, perform whatever
|
||||
* platform specific initialization of the user memory is required.
|
||||
* Normally this just means initializing the user space .data and .bss
|
||||
* segements.
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_BUILD_PROTECTED
|
||||
stm32_userspace();
|
||||
#endif
|
||||
|
||||
/* Then start NuttX */
|
||||
|
||||
#ifdef CONFIG_STACK_COLORATION
|
||||
/* Set the IDLE stack to the coloration value and jump into os_start() */
|
||||
|
||||
go_os_start((FAR void *)&_ebss, CONFIG_IDLETHREAD_STACKSIZE);
|
||||
#else
|
||||
/* Call os_start() */
|
||||
|
||||
os_start();
|
||||
|
||||
/* Shouldn't get here */
|
||||
|
||||
for (;;);
|
||||
#endif
|
||||
}
|
||||
@@ -0,0 +1,105 @@
|
||||
/************************************************************************************
|
||||
* arch/arm/src/stm32f7/stm32_userspace.h
|
||||
*
|
||||
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __ARCH_ARM_SRC_STM32F7_STM32_USERSPACE_H
|
||||
#define __ARCH_ARM_SRC_STM32F7_STM32_USERSPACE_H
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <nuttx/compiler.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#include "up_internal.h"
|
||||
#include "chip.h"
|
||||
|
||||
/************************************************************************************
|
||||
* Pre-processor Definitions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Types
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Inline Functions
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
/************************************************************************************
|
||||
* Public Data
|
||||
************************************************************************************/
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
#define EXTERN extern "C"
|
||||
extern "C"
|
||||
{
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Public Function Prototypes
|
||||
************************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: stm32_userspace
|
||||
*
|
||||
* Description:
|
||||
* For the case of the separate user-/kernel-space build, perform whatever
|
||||
* platform specific initialization of the user memory is required.
|
||||
* Normally this just means initializing the user space .data and .bss
|
||||
* segments.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_BUILD_PROTECTED
|
||||
void stm32_userspace(void);
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* __ARCH_ARM_SRC_STM32F7_STM32_USERSPACE_H */
|
||||
Reference in New Issue
Block a user